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Kiswahili Full glow

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Engineered in Dar es Salaam for African venues

The night they
never stop
talking about.

GRAND JACKPOT
PRINCESS CASINO · MAIN HALL
MACHINE 14 TZS 1,250,000TABLE 3 TZS 480,000MACHINE 07 TZS 2,100,000MACHINE 14 TZS 1,250,000TABLE 3 TZS 480,000MACHINE 07 TZS 2,100,000
Casino · Jackpot & draw

Event OS turns one ordinary Windows PC into a control room for every TV, projector and phone in your venue. Guests vote from their seats. Jackpot draws nobody can dispute. Queues that end the shouting. Winner reveals that make the room stand up.

No internet. No blackout panic. No technician on speed-dial.

Umeme umekatika? It keeps running. No internet? Never needed it. M-Pesa? Pay in 30 seconds.
100%
offline — the internet is only needed once, to activate
<1s
from your click to every screen in the building
2
languages — Kiswahili & English, switched live mid-event
∞
screens — TVs, projectors and phones, zero app installs
New in Event OS 2.2

Four things you asked for.
All of them work offline.

New

PC screen projection

Any laptop onto every screen, straight from the browser. Pick a screen, a window or a tab — no HDMI cable, nothing to install, and it still works on old smart-TV browsers.

See it running →
New

Split screen

One TV shows up to nine things at once — 19 layouts, a different module in each zone. The split survives a power cut and comes back exactly as it was.

See it running →
New

Scheduler

Screens that switch themselves: what to show, on which screens, between which times — once, daily or on chosen weekdays. If the PC was off when a slot opened, it starts late instead of never.

New

Vote report

Proof for award nights and elections: every ballot logged with its device and time, repeat and late votes counted separately, one CSV for the evidence pack. Super Admin only.

See it running →
Live from the venue floor

These are your screens.
Watch them work.

Everything below is the real Event OS display, running live in this page right now — not a picture of it. Tap any screen to see what your audience sees.

Solutions, not software

We don't sell modules.
We sell the moment people remember.

Nobody wakes up wanting “digital signage”. They want a wedding the family talks about for years, a draw nobody can dispute, a waiting room nobody dreads. Start from your night — we will tell you exactly what it takes.

Wedding & MC Pack

Weddings · MCs · Event planners

“The programme is on a folded piece of paper, the couple's names are misspelled on a PowerPoint, and the photographer's photos arrive three weeks after anyone still cares.”

The countdown builds the moment before anyone sits down. The programme updates itself as the day flexes. The winner reveal turns the bouquet toss into theatre. Guests vote best-dressed live from their phones. And the guest photo wall puts their own photos on the big screens while the party is still happening. MCs: your clients will think you hired a production company.

Countdown Timer Event Programme Winner Announcement Digital Signage & Promo Live Voting & Polls
🎁 12-month plan includes: FREE UniFi Wi-Fi router, fully configured for easy guest connection

Casino Draw Night

Casinos · Gaming halls · Betting lounges

“A manual draw on a whiteboard. The winner announced by shouting. Two customers disputing the result — and one of them is filming it.”

Draw schedules and player registers upload in seconds. The jackpot counter pulls every eye in the hall to the wall. The winner announcement fills every screen with full-screen confetti. And every action sits in a tamper-evident audit trail — disputes end because the evidence is on the wall, and on the record.

Jackpot & Draw Digital Signage & Promo

Harambee & Church Pack

Churches · Harambee committees · NGOs

“People pledge loudly and pay quietly. The treasurer's notebook says one number, the M-Pesa statement says another, and nobody wants to chase Uncle in public.”

Pledges come in from any phone, the thermometer climbs on the big screen and pulls the room with it, every pledge tracks its cash / mobile / bank status, and the committee leaves the same evening with a printable contributor report. Kindly, automatically, in Kiswahili.

Fundraising / Pledge Tracker Event Programme

Calm Waiting Room

Hospitals · Banks · SACCOs · Clinics

“A crowd at reception, everyone convinced somebody jumped the line. Staff shout numbers. Patients hover at the desk because losing sight of it means losing their place.”

Everyone takes a ticket on their own phone and sees their live position and estimated wait from their seat. Priority tickets protect elders. The room goes quiet — and your reviews stop mentioning the word "chaos".

Queue Management Digital Signage & Promo

Match Night Pack

Sports bars · Bet lounges · Nightlife

“Match ends, screens go dark, customers drift home. The bar down the road has the same beer, the same TV, the same everything.”

Half-time predictions from every phone in the room, man-of-the-match voting, and a leaderboard of regulars that people come back to defend. Same beer — but a night they cannot get anywhere else. That is the whole game.

Live Voting & Polls Live Scoreboard

Venue & Conference Pack

Hotels · Conference centres · Event venues

“Printed A4 signs taped next to flat screens. Every event means a technician, a laptop and a hunt for an HDMI cable.”

Daily schedules, wayfinding and promos run themselves on every screen. And when a client books your hall, “our screens are part of the package” becomes a line item you charge for. The system pays for itself, then starts earning.

Digital Signage & Promo Event Programme Countdown Timer

Conference & Boardroom Pack

Factories · Banks · Conference centres · Training rooms

“Every meeting starts the same way — someone hunting for an HDMI cable, someone else asking whether the laptop will reach the far screen, and ten minutes gone before the first slide.”

The presenter opens one page in a browser, picks a screen, a window or a tab, and it is on every screen in the building — no cable, no dongle, nothing installed on their laptop. Extend the desktop instead of mirroring it and the room sees the slides while the presenter keeps their notes. Split the wall: live production figures on one side, the shift programme on the other. And it can be set to come on by itself at shift-change every morning. IT installs nothing.

PC Screen Projection Event Programme Countdown Timer Digital Signage & Promo
Try the whole platform free.Every module unlocked for 3 days — run a real event on it before you pay anything.
Works with zero internet.If your venue has power and a Wi-Fi router, it works. Full stop.
Pay by M-Pesa. No contracts.Licenses simply expire — nothing auto-renews, nothing surprises you on a Monday.
Yours in Kiswahili.Interface, screens and voice announcements — lugha zote mbili.
Factories · Plants · Warehouses

Put your whole plant
on the screen.

Safety, output and notices — where every worker can see them, all day, without anyone printing a thing.

So what is it?

Event OS is software, not a machine. It runs on one ordinary Windows computer in your office — and feeds every TV screen in the plant.

Each TV has a small player box that we supply. It reads from the office PC over your own network — no internet needed.

Event OS is not a production-monitoring system: the numbers on the screen are the ones your team types in.

Event OS is software, not a machine. It runs on one ordinary Windows computer in your office — and feeds every TV screen in the plant.
Your office PC Event OS runs here
At the main gate
247Days without an accident
On line A
3,744of 4,800 bags
Line A · Shift B · 2 hours left
In the canteen
Notice to all staff Safety meeting — Friday 8:00All shifts · Canteen

What goes on the screens

Days without an accident

A big number on the wall that counts up by itself. Nobody wants to be the one who puts it back to zero.

Runs on Countdown Timer

Notices people actually read

Type a message once in the office. It shows on every screen. No printing, no pinning, no torn paper.

Runs on Digital Signage & Promo Ticker bar · free with every licence

Safety talks on repeat

Your toolbox-talk slides and videos play through the day. New staff and visitors learn the rules without a meeting.

Runs on Digital Signage & Promo

Today's target and output

How much each line should make and how much it has made, typed in by a supervisor. The shift sees it is behind while there is still time.

Runs on Leaderboard

Calling trucks and queues

Drivers take a number on their phone and the screen calls it, with a chime and a spoken announcement. Works for stores, the clinic and the canteen too.

Runs on Queue Management

Emergency message on every screen

One button puts an urgent message over every screen in the plant at once — an evacuation, a fire drill, a gate closure.

Runs on Emergency broadcast · free with every licence

Briefings without a cable

Shift briefings and training slides go from any office laptop to the canteen TV, straight from the browser.

Runs on PC Screen Projection

Shift clocks

The time and date on a whole screen or in one corner of it, in Kiswahili or English. Nobody ever has to touch it.

Runs on Clock & date · free with every licence

Also: staff recognition on the big screen · screens that change by themselves at shift-change · one TV split into zones

Why plants keep it on the wall

One messageEvery shift sees the same thing. No rumours.
Safety in front of themSeen hundreds of times a day. That is how a habit forms.
No end-of-shift surprisesThe line sees it is behind at 11am, not at 6pm.

What plant managers ask us

“We have no internet at the plant.”Good — it does not need any. It runs on your own computer, inside your own walls.
“Our power goes off.”It starts itself back up when power returns. Nothing is lost, and nobody has to fix anything.
“Who will type the numbers?”One supervisor, a few seconds an hour. The counter, notices and clocks need nobody at all.
“What do we have to buy?”A TV for each spot, and a small player box we supply per TV. The office computer is one you likely already have. We install it all in a day.
Cover of the Event OS factory presentation PDF · 12 slides
Factory presentation · PDF

Take the whole idea into your next meeting.

Twelve slides for the plant manager, HSE and the board: where the screens go, what each one shows, and how it is set up. Read it on your phone, download it, or forward it to whoever signs off.

12 slides · English · 565 KB · free, no sign-up
Book a free plant demo

See it on your own wall — free.

Send us one WhatsApp with the name of your plant. We bring a screen, set it up, and show you your own safety counter running. Thirty minutes. No cost, no obligation.

Book a plant demo Every plant is quoted after the demo, for that site.
Why it survives here

Built for the venue floor,
not the data centre.

Every engineering decision started in a real African venue: power that goes, internet that costs, hardware that is mixed, and an audience on every kind of phone.

Power-cut proof

Every action is written to disk the instant it happens. When the power returns, the platform and every screen restore themselves to the exact second before the blackout. The operator does nothing. The audience never finds out.

Umeme ukirudi, kila kitu kinarudi kama kilivyokuwa.

It brings its own network

Runs on venue Wi-Fi or its own hotspot. Unplug the internet cable and the entire event keeps going.

Any phone joins

Guests scan a QR and vote, pledge or take a ticket. No downloads, no accounts, loads on 2G.

Every screen fits itself

Screens self-register and auto-scale from a tired 720p TV to a 6K wall. Always legible, always deliberate.

Kiswahili kwanza

Interface, displays and voice announcements in both languages — switchable live, mid-event, from the control room.

Pay only for what you actually use

Each module is licensed on its own. Buy Voting for the wedding season, add the Jackpot console when the casino contract lands. Each expires on its own, and your license mirrors your invoice line for line.

Lipa kwa M-Pesa, Tigo Pesa, Airtel Money au benki.
Modules & pricing

Compose your event.
Module by module.

Pick only the modules your night needs. The platform itself — unlimited screens, themes, ticker and emergency broadcast — is always included free. Longer plans save 5% on 3 months, 15% on 12.

standard

Countdown Timer

Kihesabu Muda

Elegant countdowns to any moment — weddings, launches, kickoffs.

See today's price →
standard

Event Programme

Ratiba ya Tukio

Full running order that auto-highlights the current item.

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standard

Winner Announcement

Tangazo la Mshindi

Suspense build-up, synchronized reveal and confetti on every screen.

See today's price →
standard

Live Scoreboard

Ubao wa Alama

Instant two-side scoring with team colours and logos.

See today's price →
standard

Leaderboard

Orodha ya Washindi

Auto-sorted live rankings with medal styling.

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standard

Digital Signage & Promo

Matangazo ya Kidijitali

Rotating menus, offers and notices — plus a guest photo wall: guests beam photos from their phones to the screens.

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premium

Live Voting & Polls

Kura za Papo kwa Papo

QR voting from any phone, animated live results, duplicate-vote protection.

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premium

Queue Management

Usimamizi wa Foleni

"Now Serving" ticketing with QR self-service and smart wait estimates.

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premium

Fundraising / Pledge Tracker

Michango / Harambee

Animated progress to target, pledges from phones, M-Pesa reference capture.

See today's price →
premium

Jackpot & Draw

Jakpoti na Droo

Live jackpot counter, scheduled draws, dramatic winner reveals.

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premium

PC Screen Projection

Kurusha Skrini ya PC

Put any computer screen — slides, dashboards, live production figures — on every screen in the building, straight from the browser. Nothing to install on the presenter's laptop.

See today's price →
Always free Included with every license

Unlimited screens · Themes & branding · Live ticker · Emergency broadcast · Kiswahili/English · Offline operation · Auto-recovery after power cuts

Choose your modules →

How buying works

Transparent, and built
around mobile money.

01

Pick your modules

Choose modules and billing period. You get an itemized invoice with a unique payment reference.

02

Pay your way

M-Pesa, Tigo Pesa, Airtel Money or bank transfer — quoting that reference.

03

Submit the receipt

Enter the transaction ID on your invoice page. Our team verifies it quickly.

04

License by email

Your key unlocks exactly the modules you paid for — matching your invoice line by line.

The honest answers

What you are really
asking before you buy.

Event OS is offline-first event display software built by Ellertek Solutions in Dar es Salaam, Tanzania. It runs on a single Windows PC and drives every screen at a venue or plant — live audience voting, casino jackpot counters and scheduled draws, queue management, winner reveals, harambee fundraising, digital signage, PC screen projection, split screens and scheduled screen changes, plus safety counters and notice boards for factories — in Kiswahili and English, with no internet connection needed after activation.

Do I need internet for my event?
No. Event OS runs completely offline. The internet is used once — to activate your license — and after that you can unplug the cable, run the whole event on the venue Wi-Fi or the PC's own hotspot, and nothing changes. This is the reason the platform exists.
What happens when the power goes out?
Every action is saved to disk the moment it happens. When power returns and the PC starts, the platform and every connected screen restore themselves to the exact state before the blackout — the same jackpot total, the same votes, the same queue position. Your operator does nothing, and most audiences never realise anything happened.
Do my guests need to download an app?
Never. Guests scan a QR code with the camera they already have, and the voting, pledge or queue page opens in their browser. It is built to load on a 2G connection on an entry-level Android phone, because that is what most of your audience is holding.
Can I pay with M-Pesa?
Yes — M-Pesa, Tigo Pesa, Airtel Money or bank transfer to NMB. You get an itemized invoice with a unique reference, you pay, you enter the transaction ID, and your license key is emailed to you. No card, no foreign payment gateway, no monthly auto-charge.
What if I only need one module?
Then you only buy one. Every module is licensed independently and expires on its own. Buy Live Voting for the wedding season and add the Jackpot console the month your casino contract starts. Your license always mirrors your invoice exactly — you are never paying for a screen you do not switch on.
Is the Jackpot module really worth the money?
Ask it the other way around: what does one disputed draw cost you? A regular who never comes back, a table that stays empty, and a video on someone's status. Its daily cost is less than the float in one machine — and it replaces the whiteboard with a scheduled draw, a full-screen winner reveal and a tamper-evident audit trail. It is the cheapest dispute insurance in your building.
What hardware do I need?
One Windows PC or laptop (Windows 10 or 11), a Wi-Fi router, and whatever screens you already own — TVs, projectors, even old ones. Screens connect over the network or HDMI and register themselves. There is no server, no subscription hardware and nothing to send back.
Can I try it before I pay?
Yes — 3 days, every module unlocked, no card. Do not test it on a demo file: run a real event on it. That is the only test that matters, and it is the test we want you to run.
Does it really work in Kiswahili?
Completely. The operator interface, every audience screen and the voice announcements are bilingual, and you can switch languages live in the middle of an event — English for the corporate segment, Kiswahili the moment the family arrives.
Who is behind it, and who fixes it at 9pm on a Saturday?
Ellertek Solutions Company Limited, Dar es Salaam. We built this for venues on this continent, we answer WhatsApp on event nights, and the platform is designed so that the thing most likely to fail — the internet — is the one thing it does not need.
Can we show a laptop or a PowerPoint on the screens?
Yes, with the PC Screen Projection module. On the Event OS computer, open the presenter page in the browser and pick a screen, a window or a tab — it appears on every screen, or only the ones you choose. Other laptops on the same network can present too, after a one-time setup. Nothing is installed on the presenter's laptop, and the picture works even on old smart-TV browsers.
Does Event OS make sense in a factory?
Yes — for the things a plant needs every worker to see: the days-without-an-accident counter, notices, safety talks, gate and truck calling, shift clocks, and today's target and output typed in by a supervisor. Event OS is software: it runs on one ordinary Windows computer in your office, and each TV gets a small player box we supply. It is not a production-monitoring system and it does not connect to your equipment. We bring a screen to your plant and show it running, free.
Karibu Event OS

Your next event,
on every screen.

Full platform, every module, 3 days free. No card. No internet required to run it. Run one real event on it — that is the whole pitch.

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